QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4mb_lg

9 km NE of Mayfield, Kansas

· 5.0 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 9 kmSedgwick County 40 kmHarper County 54 kmCowley County 57 kmKay County 63 kmKingman County 64 kmGrant County 65 kmButler County 76 kmHarvey County 81 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.4 (mb_lg)
Depth
5.0 km below the surface
Felt
11 reports · strongest reported intensity III
Nearest
Sumner County, 9 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2017 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 37.3196, -97.4769. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 9 km (6 mi) N of here earthquakes near Sumner County
Sedgwick County, KS 40 km (25 mi) S of here earthquakes near Sedgwick County
Harper County, KS 54 km (34 mi) ENE of here earthquakes near Harper County
Cowley County, KS 57 km (36 mi) W of here earthquakes near Cowley County
Kay County, OK 63 km (39 mi) NNW of here earthquakes near Kay County
Kingman County, KS 64 km (40 mi) ESE of here earthquakes near Kingman County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

51 earthquakes have been recorded within 50 km since this one.

  1. 1.9 8 km WSW of Hunnewell, Kansas
  2. 1.6 12 km WSW of Hunnewell, Kansas
  3. 2.5 5 km NE of Argonia, Kansas
  4. 2.1 8 km NNE of Argonia, Kansas
  5. 2.5 6 km NNE of Argonia, Kansas
  6. 2.1 11 km WSW of Hunnewell, Kansas
  7. 2.1 3 km SE of Hunnewell, Kansas
  8. 2.7 8 km NNW of Milan, Kansas
  9. 1.5 2 km NW of Renfrow, Oklahoma
  10. 2.5 2 km NW of McConnell AFB, Kansas
  11. 2.0 6 km NE of Norwich, Kansas
  12. 2.0 5 km NE of Braman, Oklahoma
  13. 1.9 2 km NW of Renfrow, Oklahoma
  14. 1.8 2 km NW of Renfrow, Oklahoma
  15. 2.4 2 km NW of Renfrow, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2019-01-16 — it released about 250 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.